Printing-press.



E.' l0. CARTWRIGHT. PRINTING PRESS. APPLICATION FILED MAY 18,71906.

, E. 0. UART-WRIGHT.

PRINTING Pnnss. VAPIPLIOA'ILION FILED' HAY 18, 1908.

Ptena July e, 1909.

-4 IIEETI--IHBBT 2.

WW A

anhin,

y11.0. GARTWRIGHT..

Patnted July 6, 1909.

4 sums-SERIA.

l NI

(Imagna,

. UNITED STATES PATENT ERNEST o. GAETWRIGHT, or SPRINGFIELD, oHio,`AssIGNon or ONE-HALF To LoUI'sFIsiIER,

or WEST MILTON, OHIO. y

PRINTING-PRESS.

Nef-agosto.

Specific-ation o! Letters Patent.

Patented uly 6, 190.9.

Application led lay 178., 1906. Serial No. 317,589.

and useful Improvements in Printing-Presses of which the following is aspecification, reference being had therein to the accm panying drawings.y

This invention relates to printing presses, and, more particularly tothat class of printing presses known as platen presses.

'l ve invention has for its object to provide a construction whereby'aplaten press'may be produced which will be simple and veryl .com act, inwhich the lim ression will be firm and uniform, whichy wil be rapid inits operation, and which will be adapted for use in connection witheither an automatic sheet feed or an' automatic roll feed withoutrequiring any alterations in the other portions ofthe ress.

A vrlot 'ese and other ends my invention consists\ in certain novelfeatures which I will ow proceed to describe, and will then particularlypoint out in the claims.

In the accompanying drawings, Figure 1 is .a side elevation of astructure embodying my invention in one form, portions thereof beingbroken away and shown insection; Fi 2 is a central vertical sectionalview, ta (en on the line :t x of Fig. 1 and looking in the direction ofthe arrows; Fig. 3 is a sectional view, taken on the line yy r/ of Fig.2 'and looking in the direction ofthe arrows; Fig. '4 is aside elevationof the'upper portion of the machine, partly broken away, illustratingthe throw-oil' mechanism; Fig. 5 is an enlarged detail sectional view,taken on the line z z of Fig. 3 and looking in the direction of thearrows; and Fig. 6 is a detail top plan view of one end o f thesheetfeeding mechanism.

' In 'the said drawings, `in which I have shown a preferred embodimentof my invention, the press is shown as supported in a frame composed oftwo similar parallel up right plates 1, connected by rods 2 at the topand bottom. Each of these side frame members 1 is provided at itscentral portion with an o ening 3, having vertical lateral edges 4, whicform guideways lor slide blocks 5, which support and actuate thecombined form bed 'and inking drum. A vertical movement of reciprocationis imparted `to the slide blocks in any suitable manner, that which Iprefer being by means of the construction shown, in which each slideblock is shown as rovided with a horizontal slot 6, into whic extends acrank pin 7, eccentrically mounted in a gear wheel 8. Each gear wheel 8is supported on a stud shaft 9, secured in a bridge piece 10 whichextends across the correspondin Opening-3 of the frame. The gear whee s8' are driven by means f'gear wheels 11, secured on a sha-it 12 which ismounted in suitable bearings in the side frame members 1. One of thegears 11 meshes with a pinion 13 on a driving shaft.

14, lto which power nay be applied in any suitable manner. The shaft 14may also be provided with a' suitable driving pulley 15.

The form bed and inking drum are coinbined in a single structure, theformer being indicated by the reference numeral 16 and the latter by thereference numeral 17. They are preferably integral or formedin a singlepiece, being cast in the-form of 'a cylinder, hollowed for lightness andlattened on its upper side to constitute the form bed. This casting issecured to the slide block 5 by means of screw bolts 18, passing throughthe slide blocks and screwing into the ends oll the casting. Saidcasting is provided at each end with a cylindrical trunnion 19, and onvthese trunnion's are loosely mounted the revolving carriers2() which sup)ort and actuate the form-inking rollers. .lach of these carriers is inthe form of a segment of a wheel or disk of greater diameter than theinking drum, and they are given a constant rotary motion while the pressis in operation to cause them to travel laround the form bed.

ment. lAround each sprocket wheel 21 thereA passes a sprocket cham 22,said chain also passing aroundfa sprocket wheel 23, eccentricallymountedon the -shaft 12. The s rocket wheels 23 are secured to hubs orslieeves 24 on the shaftV 12, in order to effect a satisfactory"connection between said drum and the on the rods 37 at the other end,and said reds l -at'the endet the downwardnlovement ofthe 65.. nkingdrum. and 'the inkitlius supplied to the "l ses,

sprocket wheels and shaft. 'ine eeeentrieity I of the sprocket Wheels isequal to the travel I o1" the slide blocks 5, and is so arranged that Ithe sprocket chains 22 are kept at an even tension and the carriers 2Gare rotated at an I even speed as the slide blocks reciprocatel Theform-inking rollers, indicated by the reference numeral 25, arepreferably three in I number, and are supported in the carriers 2() I byhaving their shafts 2G extended tlirm'igli. radial slots 27 in thecarriers,.\.vliieh latter. -e a provided with springs 22%, mounted inrecesscs With which the slots 27 comnninicatdsaid springs bearing onelle ends ol the shaft 26 to press the rollers 25 radially inward intoproper Contact with the inlring drum and With the type or other.impression surface on the form bed. The ends of the inlring drum arerabbeted` or cut away, as indicated at 29, l and the forni bed isprovided with laterally'- upwardly extending ribs or flanges 30, and onthe Ways thus provided ltravel the bearing rollers or wheels 31 withwhich the forni roller shaftsfZ` are provided, by means elI which` therelations ofthe rollers to the print ing and inkdistributin-g' surfacesare properlyT maintained` v The cylindrical surface of the inking drum17 is supplied with ink from fountains 32 of. I any approved type,located on opposite sides I ol' sa1d druiii'at the irent and rear of thema-A l chine, and provided with supply rollers 33, which may beactuated. in any suitable manner. The ink is transferred from the foun-`tains tothe drum 17 by means of ductor rollers 34, mounted to rotateinthe free upper ends of vibrating arms 35, he lower ends of which` arepivoted upenn suitable sup-- port, preferably the shalt 1.2', en whiclithey are loosely mounted. The arms 35. are, pressed normally inufard'toward each other by ine-ans of springs 36, coiled around rods 37,which are pivotally connected to' the arms 35 and which pass out throughsui able apertures in the brackets l-willen support the fountains Thesprings bear 4against e the brackets at one end and against collars 3Qare provided with stops or heads 40 at their outer ends to limit theirinward movement The ar rangement of these parts is such that, when theform bed and inlging drum move down# Ward, 'the inling drumc onies intoContact' with tlie ductor rollers Wh i )liess latterare in theiruppermostpositie n I,rest to each other, and, passing down'alrdlbetv/een them, forces them downward dlglitivard 'away from eachotlienand towardn "l (l V1elint-ains, at"

liifmovement continues-'until :'t ie cluster rollen brought' intocontact with the fountain r tained, since thelorni bed and prin ratchetWheels and gripper'rings 'Jnaticsheet feed, and their connor' ese.

ductor rollers is transleriml le 'the drum during the 'first portion ol'movement olf' aid drum, during;-A ri. the, said rolls are held againstthe d the springs 36 and roll over the sur@ the same as they approacheach otlic the rise el tile drinn. lfllhen the hea the rods come into'coni.;` l the due-tor rollers erackcts Je? tionary, and the form bed andi continue to .move upward a di l cient to permit the forni inkl passbetween the inlfinf; drum rollers when :st-idl drum in tion. The ductorrollers in with. vibrating distributingr rol ed on the arms 35 incontact 34, and actuated from these lat'` tributing rollers being ofang,` a struction.

The hraclrets 3S may be .la slotted, as indicated d2, to bolts 43 bywhich the 'fountains cured thereon, thus permitting ladjustment el thcfountains on sah. relatively to the inlring drum. f ilu ployment of twofountains, the pressm. used for printing in two colors, the lou' beinglocated opposite different halves c inking drum, and the latter beingprwith a central r' ',uinl'creniial gn. arate 'the d buting surfaces orthe tir:

cient inliis.

ln connection ,vitlrtlie verticali reeiffre eating forni bed, which isalways n1 M in a horizontal position throughout nu i of'movenient, lemploy a normally iixed or stationary platen 4.5, located above the leibed., with its under face, which receives tix"- tyrnpan, held firmly inlniriaontal position, exact parallelism with the torni b l, so tliaf asquare impression contact a jas en face of the platenare .always 'garanr each other during the printing op The platen is provided with a sleeveapperpertion, byrneans ci which .b v secured toV a normally stationaryshaft 47.,

'which shaft issupported its ends in the l side members l ol' the frame.sion surface 48 of the platen iseoefrensive in length with the bodyo thecasting of which The in inres it forms a nar-t, being therefore alsoeeexteni sive in length With the supporting'sieeve 46,

and the trarne members l are 'located f-lc the ends of said castinff,vonly a rel .lively .narrow space. being left between the casting; .andframe members .for the moin ig of tire on of ,this construction, 'the plis sup rted soclose' its vends as to p l' any gingfoi" the same troniinequali r the 'rression surfaces, thereby maintaining the l .llelisi'nofthe platen and forni bed',

Althoughl the platen is normally station'- ary, provision is made lforinverting the 'guideWays-56` on the inner faces 'of' the framemembers 1. These looking pins are so arranged that, when-the platen Iisin vWorkingposition, the lower endsmay Abe engaged in notches orrecesses 51 in the upper side ofthe shaft 47, thereby holding the sameagainst rotary motion and maintaining the platen in properhorizontalposition. By drawing 'the pins 49 upwardl and disengaging them, the`shaft 47 may be released so as' to permit the platen to be turned upinthemanner described. Provision is also made for moving..

the platen vertically aslight distance for'the purpose of throwing'olifthe impression when necessary. T o this end, the shaft 47 Aterminates atits ends in reduced bearing trunnions 52, each of said trunnionsrotating in a vertically sliding cross-head or box 53,

mounted in a rectangular aperture-54 in the corresponding framemember 1. -Thevcrosshead 53 is of the same Width as the aperture 54, sothat the lateral vertical sides 55 of said aperture consitute guidevvaysfor said head,

' Which is of less height'thang'said aperture, so

that it may move'vertically therein: In the front of the'cross-head 58there is locatedin the aperture 54 a sliding box .56, of a height equalto the height ofthe aperture 54', so that the horizontal top and-bottommargins 57 of said aperture constitute guide4 'margins for the saidplate or box, .which is of less Width than the aperture 54, so that itis capable of sliding horizontally therein. Vithin *the box 56 there is'mounted to rotate a vsleeve 58,

in which the corresponding trunnion 52 of the shaft' 47 is eccentricallymounted..

` From this construction it will beseen that when the sleeves 58 arerotated in their boxes 56, the shaft 47 will be moved vertically, tharrangement of the guide platesbeing such as to maintain the axis'ofsaid shaft' always inthe same vertical 'plane throughout its range ofmovement, thereby preventing lateral displacement ofthe platen. Thisvertical movement lof the platen lis in line withy the Avertical lockingbolts 49,- 'so that these latter will move upward when .the

platen is raised'to throw. oii the impression.

Thus this movement of the platen in a straight line'permits the use oflockingv bolts having long straight guiding. and supporting surfaces inthe main frame, .so as to iirnilyihold. the platen against movement When`engafcged i. .of suc-h bolts so supported, Y

therewith, .the use being impossibiewaae ine-parents a,

lateral or swingingmovement during the o" eration of thethrovt'forl.;`In order to permit the sleeves 58 to'bereadily operated simultaneously,s'aid sleeves' are provided on' their ne'ctedl by klinks 6'()- to arms61, projecting from a/rock shaft 62, extending transversely lof themachine at the-top thereof and controlled by a hand lever 63. This rockshaft takes the place of oneof thetie rods'2 ofthe frame, and in orderto enable it to holdfthe side plates 1 in position, it is provide'dwit'hcollarsfZ-a Awhich bear against said plates".`

Since the platen is stationary, it is obvious that the'press is adapted'foruse with either' an automatic sheet-feeding mechanism, jas

shown, or an automatic roll-feeding mechanism, feeding the paper in "acontinuous Web from a roll., In the present 1nstance,'I'have shown anautomatic sheet-'feeding niechan-` ism which is particularly adaptedand..le-`

vised for use inconnecti-on With the structure. which I have' heretoforedescribed.' This feeding mechanism issupported upon those portions ofthe shaft 47 which lie between tions form trunnions for the same. l ofthesetrunnions therey ismounted asta- .tionary rand-carrying ring64,annular 1nv theplaten and frame members 1, Which por- On one form andsecured to the shaft47, While thev other trunnion has mounted looselythereon,

Iso as torevolve onthe shaft 47,a pawl-carrying ring 65. These rings areheld in place Y .between .the frame members 1 and the ends of the'platenby means of spacing rings 66.

TheA annular surface of each pawl-'carrying ring forms -a bearing for agripper carrying ring 67, which is free to rotate therein, and which maybe held against lateral displace- .ment by an annular ilange 68 on thepawlcarrying ring The stationary'pawl-carrying ring' 64 is provided witha peripheral re- 'ccss 69, in `which isjmounted a spring-actuated4detent pawi 70. The movable paw]- c-arrying ring 65 is `provided with acorresponding' peripheral recess 71, in which a spring-actuated feedingraul 72 is located. The gripper-carrying ings 67 are provided with teeth73, correspondingin number and .radial location Wit-h the grippersandadapted y to be snnultaneousiy .engaged by the detent and feeding'pawls. The movable ring 65 has an oscillatory movement impai ted 'to itby connection lWith a reciprocating art of the mechanism alreadydesciibed', ltliisjcon-l inectionbcing preferably effected by meansof'al rod 74, the upper end of Whichis riveted at T 5 `to the outer faceof the ring 65, while it-s lower end. is pivc/ted 'ath76 '-'tov one ofthe slide blocks The ring. 65'Whicli carries the feed pawls is`therefore moved a quarter oi'ja' revolutionin one direction 'during the"upwardfiuoveinent of the forni -bcd and its lii'lewl-)loelaigandis thenmoved backward aV ion ment of the detent pawl 70 with one of thel teeth73 of the gripper' ring 67 -which is mounted on the stationary pawl-ringG4. During the succeeding downward movement of the form bed, thepawl-ring 65, by reason i of the engagement of its pawl 7 2 with one ofthe teeth 7 3 of the gripper ring 67 which is mounted on said pawl-ring65, rotates j both paWl-rings in the4 direction indicated by n, it*being understood that the fare connected together by the grlppersin` lesthe arrows, advancing them a `quarter turn, gripper rings such a way asto move in unison. The gripper rings are thus moved intermittently oradvanced a quarter turn at each downward movement of the form bed. It isdesirable that this feeding movement of the gripper rings should notbegin simultaneously with the downward movement of the form bed, inorder that the sheet which has just received an impression should notbegin to move until after the form is clear of the. sheet. To eifectthis result, the connecting rod 7 e is constructed in two parts,connected by a slipjoint or lost-motion connection which will permit thelower portion to move downward somewhat with the form bed before itsmovement is communicated to the upper portion and to the feeding-pawlring. Any suitable connection may be employed for this purpose, thatshown comprising a slot 7 5a in one of the portions of the rod, withwhich a projection 76a on the other portion engages. l have also shownthe lower portion of the rod 74 as Offset laterally to permit itsconnection Vwith the slide block 5, the frame member l being grooved onits inner side, as indicated at 77, to accommodate this offset portionwhen the connecting rod moves upward.

As already stated, the gripper' rings 67 are connected to move in unisonby means of the grippers. In the present instance, I have shown theselatter as raised somewhat fromv the peripheries of the gripping rings bymeans of' blocks 78. On these blocks are mounted supporting plates 7 9,which extend across from one gripper ring to the other7 and the gripperrings are further connected by cross bars 8() which are mounted on theforward portions of the plates 79 and also extend across from onegripper ring to the other. These parts are secured in position by screwbolts 81, which passdpwn' through the cross bars 80, the plates 7 Qandthe spacing blocks 78, their lower ends being threaded into the bodyportions of the gripper rings 67. A`Over the rear edgeof eachsupportingplate 79 there extends a radially'-niovable upward @sassogripper bar 82, guided by means of radially arranged fingers orprojections 83 at its ends, which extend inward through guidingapertures 84 in (uitwardly extending' fianges S5 on the gripper rings67. These gripper bars 82 are thrust normally inward by springs 86,secured to the cross bars 80 and extending rearward over the gripperbars. When free to move inward underthe action of. the springs 86, thegripper bars 82 clamp the leading or forward. edge of the sheets againstthe supporting plates 79. The gripper bars are forced radially outwardto receiveor release the sheets by means ol' pins 87 vand 88, extendinginward from the frame members 1 and acting as cams upon the inner endsof the guiding fingers 83 of the gripper bars, in whose path they /lieThus, in the position of the parts shfnvmthe gripper which lies at theend of the feed board 89 has its gripper bar thrust outward by means ofthe pin 87, so as to form an opening between said bar and the supportingplate '79 through which the edge of the sheet .may be introduced fromthe feed board. fit the same time, the gripper next following has itsgripper bar forcedoutward by the pin 88 for the purpose offreleasing theprinted sheet. In all other positions of the parts, the gripper bars aremoved inward so as to grip the leading edges of the several sheets. Infront of each cross bar 8O there is located an abutment 90, to arrestthe Yfront edge of the sheet as it is fed forward from the feed board,and this abutment is adjustable to arrest the front edge of the sheet atthe desired point by means of screws v91, extending through the crossybar 80.

The feed board 89 is located at the top of the machine, above thegripper rings, and is hinged at its outer end, as indicated at 92, sothat its inner en d is free to rise to permit the passage of thegrippers and so that the feed board may be swung out of the way when theplaten is inverted in. making ready. The feed board is lifted for thepassage of the grippers by means of fingers or projections 92a, whichlie in the path of the gripper ring cams 99 hereinafter referred to, andare actuated by them.

Since the sheets are held by the grippers at their'forward edges only,provision 1s made for supporting themso that the remainder of the sheetswill not fall down into the space between the gripper rings,4 but willbe proporly supported throughout their travel. To this end, Iv provide asupporting drum 93, lying between the gripper rings and supported fromthe collar or hub 45 oi' the platen by means of arms or plates 94. Thisdrum A'ex-v tends irom a point adjacent to the impression surface 48 ofthe platen on one side to a similar point on the` other side, `and its'top and side portions are preferablyrlattenned to reconoinize space.Since it. is carried bythe plat-en, it turns with thislatter wheninverted i for making ready, so that access to the platen is notprevented by the drum, Thesheets being thus supported on one side bythev d rum 93, are further supported .when in vertical position afterleaving the'feed board by an upright guard 95, arranged adjacent to'the'slde of the'druni and supported from the rod 96, which is mountedin vibrating arms 97, pivoted on a rod .98, mounted in the frame members"1. The guard' 95 is preferably composed of two fingers which 'are ad-]ustable'longitudinally on the rod 96, so as to beplaoed imposition tosupport the lateral margins of the sheet. The arms 97 are held byspring-s 97, coiled'o'n the rod 98, against 'the peripheries of thegripper rings 67,' which lattery are providedl with cam-surfaces 99which permit the arms to move inward and old the'guard 95 in properposition to retain he sheet afterthe gripper which carries it as passed.As the next gripper approaches,

V"fthe, cani surface 99 .moves the arms 97 out the-'impression is heldagainst the under 'face i 48 ofthe platen by means Vof la. frisket 100,

connected by a-rod 101 tol armsl?, pivoted on ay rod 103 mounted in theframe members: -1. The-arms 102` are pressed toward the gripper rings bya spring 102, coiled on the rod' 103,- the gripperrings being providedwith cams 104, inthe path of which the arms 102-lie," and which serve toswing said armsf and the frisket outward to permit t'lie'passage ofthegripper-s, the frisket returning after each gripper has passed beyondthe platen. AOn the side `opposite to that on which the guard 95 islocated is placed an apron 105adjustably coni'iected at 106to a rod107,-carried by arms 108,1oosely mounted on the rod 103. The upper endof this apron is provided with a deflecting plate 109, which is soadjustedas to liejustbelow the rear or lower edge of the printed sheetafter it has been advanced one` step :from the platen.

n When this position ofthe sheet is reached,`

'the cam or pin 88v opens the gril'iper, and the ized as to nis-ure aperfect impression. 3 After sheet is discharged by gravity, heiligdirected by the defleoting plate 10.9 so as topass outward from themachine, being discharged externally into asuitable delivery box orother g receptacle. The arms 108 are held by a s ring 108V1v against thegripl'ier' yrings, and t eir free ends lie inthe path ol' the calinsurfaces 99, whicli permit the apron to move inward' after the lsheethas' passed, and which swing the apron outward to permit the passage ofthe grippers.

`the inspection ofthe feeder. v It wil The operation of-the press as awhole will be readily undenstood from the preceding descripti'bn. ln thefirst place, it will be noted that the` sheets to be printed lie uponthe feed board and are fed to the machine face upward, or, in otherwords, with that face which is to receive thel impression eX )osed to lalso be `;noted that the sheets are discharged in the 'saine position,to wit, face upward, yand that such discharge is to a point outside thepress and free from the mechanism thereof,- where the sheets are readilyaccessible for inspection and removal.l

Assuming thatV the parts are' in the position shown, and following thesheet through the press, it is first fed into the gripper which is inposition at the 4end of the feed board, between the supporting plate 79and gripper bar y 82, its forward edge being brought against theabutment plate y90, which has been adjusted ytothe proper place tocorrectly position the sheet. This feeding ot the sheet to the grippertakes place while th'e gripper is stationary, during the upward movementof the form bed. The succeedingdownward movement of-the form bed movesthe sheet one quarter of a revolution, lit being supported during thismovement by 'the drum93 and vheld in position atthe end thereof betweensaidydrum and the guard 95. Beforethis movement begins,` the gripper isheld open to receive the sheet by the cani 87,

and the gripper closes. to grip the sheet as soon as sai movement be insand the pro- .jections 83 pass clear of sai( cam.` Upon the nextdownward movement "of the form hed the sheet is fed forward another'quarter revolution under the platen, where it is held in position bythe frislzet. duringsthe upward Vinoineinentof lthe form bed, andreceives the impress from the type or printing surface thereon. Asalready stated, it will he observed that theplaten and forni bed areheld inrigid parallelism throughout the stroke of the latter, so thatthe printing surface squarely meets the paper and the i-iiipressioiiisi'bound to be even and correct, even if one or the other of themeeting surfaces is above or below its normal position. supported soclosely to its ends` that displacement thereof by tlie.spi'iiigiiig ofthe connections.between the platen and frame is avoided. Theconstruction is thus so orga-nthc impression, and afterthe form bed hasreccdcd somewhat from the platen, the sheet is ni'ovedfanother quai-terrevolution to final position, with its rear or following edge above theapron 105, so that, when the grip- The platen is I ing rollers time andspace enough to pass oncev over said bed. This relatively short travelof the form bed renders the machine more compact and substantial andincreases the.

speed and number of impressions. Furt rermore, although the bedreciprocates to and from the platen, there is no necessity forarrestingl its movement at any time, since the inkinpT rollersreciprocate with the bed and are doing their Work while the bed is inmotion. Therefore, tlze speed of the press is not diminished, either bythe necessity of a. dwell or delay in the movement ofthe bed, or anextension of the range of movement of the movingI part of the press inlorder to give time 'for the inliing` rollers to accomplish their Work.By rea-son of the employment of the ductor rollers, the form-hiking;rollers receive their' ink only from the inlring drum, no ink beingtaken directly from the fountains onto the form-inking rollers. Thereciproeation of the inking drum along with the form bed enables me toutilize the inling drum as a means for opera-ting the ductor i rollersto bring the latter into/contact with i CAD the fountains, and also torotate. said ductor rollers in such a Way as to effect av propertransfer of the ink from the fountains to the inlring drum. Inconclusion, itwill be observed that the arrangement of the parts,

With the platen above the form bed and the.

. forrnbed reciprocating vertically` in a relatively short path, furthercontributes to the compactness of the machine by reducing its horizontaldimensions, so that the actual floor space occupied by theu machine isrelatively small. y

As already stated, one of the advantages of the construction described,involving a stationary platen at the top ofthe machine with a downwardlydirected impression surface, is that the Ina-chine may be readily usedeither With an automatic roll feed, or with an automatic sheet feed, 'ashereinbefore described; feeding mechanism hereinbefore described beomitted or detached, there will then beprovided a press so organizedthataril automatic i roll feed may be readily mounted upon' the upperpart thereof to conduct` the web' from. the roll under the platen. Suchal1-,antomatic roll feed has been devised by me, andv will form thesubject matter of, a separate application.

l Wish it to be understood that l do not desire to be limited to theexactl details of con-v Forit will be seen that 'if the sheetf esasostruction shown `and described, for obvious modilicf-rtions vwil l occurto a person slsilled in the art.

llaving' thus fully describiuil my invention, what l claim as new anddesire to secure by Letters latent,

l. ln a platen prinlineipress comprising' a frame, a normally stationeryshaft mounted in the side members of said frame, a platen rigidlysecured to saidy shaft, guideivays in said frame, slide blocks mountedto reciprocate in said guiden-ays te ward and away from seid platen, arotating' shaft, mea-ns actuated by said rotating shaft forreciprocatingl said slide blocks, a form-bed rigidly secured-to saidslide blocks parallel with said platen and adapted to reciprocate in aright line toward and away from said platen, means for permittinetheactuation of saidinst-mentioned shaft to move said platen out ofalinement ivith said form-bed, and means for inkins the `form carriedlby said form-lied while said forni-bed is in motion.

Zln a platen. printing' press, a platen and a coml 'ned form bed andinltine drum, 'said platen and forni bed l'eingr in constant par-lallelism Whenin operation and one of said members reciprocating in a,riQglit line toward and from the other, plates journaled at the ends ofsaid forni bed and inlrine` drum and provided in their inner faces withsubstantially radial grooves, inkingY rollers'slidal'ilyv mounted insaid `grooves, vsprings-,vs within said grooves beyond said rollers andengaging With said rollers to move the same toward said combined formbed and inlring drum, and means for rotating,- said plates to carry saidrollers around Said form bed and inking` drum, substantiallyasdescribed.

3. In a platen printingpress coinprising a frame, a normallystationaryplaten supported therein, guidenays in 'said frame, slideblocks mounted to reciprocate in said Itruide-v Ways ytoward and fromthe platen and having.

transverse slots therein, gears supported from said frame, a pineccentrically mounted on veach of said gears and 'engaging the slot inone of said slide blocks, means for driving 'said gears, a form bedrigidly secured to said' slide blocks and .parallel with said laten, andmeans for inking the form carried bedrwhen said bed is in motion.

l. In a platenprinting press ofthe character described,'a frame providedwith guide-: Ways, slide blocks' mounted in said guide- Ways, avrevolving shaft, incansactuated `from said-shaftfor reciprocating theslide blocks, a combined form bedl andinking' drum hav'Z ing endtrunnions secured to said slide blocks, roller carriers trnount'ed torotate' on said trunnions, sprocket vrhe'elsV iounted on said trunnionsand connected t saidroller carriers, the combined Width of saidy rollercarriers and sprocket Wheels beingsubstantially equal to t 1 espace'between said combined form bty said.

i combined' form bed and -inkin vided with inking rollers revo vingaround the saine, in combination withl a fountain lodrum acting by itscontact -wit cated adjacent to thepath of the -inking drum, and a ductorroller `ieldingly held in the path of the inking rum said inking ii saidductor roller to move the 'same into contact with the fountain,substantially as described.

' 6. ln a platen printing press of the char? acter described, areciprocating non-rotating drum pro-- combined form bed and `inkin videdwith inking rollers revo ving around tliesame, a fountain'loca'tedadjacent to the path of said inkingdrum, and pivoted springactuated armsrovided with a ductor roller yieldingly hel infthe `path ofthe inkixigdrum, said arms being arrangedto swing the ductor roller over intocontact with the fountain when the inking drum pushes said roller out ofits path, substantially as described.

7. 4In a laten printing press of the char-4 acter described, areciprocating non-rotating combined form ,bed and inking drum providedwith inking rollers revolving around the same, in combinati,

inking drum, and pivoted s ring-actuated arms provided with ductoi' ro1ers yieldingly supported in theA patli of the inking drum,

Vacter described, pa platen with fountains loi cated on opposite sidesof the'path of said inking.' drum passing downward between said ductorrollers,forcin `them apart and'l moving them outwardly into: contactwith the fountains, substantially as described A8. I In a platenprintingp'ress of the charac,` ter described, a frame-in combinationwith alaten having Vtrunnione supported in saidv raine'andprovided'vvith recesses, and locking bolts mounted to slidelongitudinally iii said'A frame to engiage said recesses, subsi-itanlvtially asdescribe v, s ,l

9.l In aiplaten printing `ress offthe-charwith lockingrecesses, a framehaving longitudinally y siding locking bolts mounted theieinto" engagesaid recesses, anda throw- 4 off mechanism actingv between thetrunnioiis and frameto move the platen in the line'of movement of thelocking bolts, substantially its described.

y 10. Ina laten printing press lofthe char-- acterV descr'i ed, aplatenhavin trunnions,'.

and a frame having vertical an vhorizontal uideways, in combination withcross-heads tting the vertical guideways and truiinions, boxesv fittingthe horizontal guide/Ways, sleeves mounted to rotate in' said`boXes',vthe truniiions being eecentrically mounted in said sleeves, andmeans for simultaneously rotating saidsleeves, substantially asdesciibed'.

In testimony whereof, Iaiix my signature in'pi'esence of two witnesses.l

' ERNEST O, CARTWRIGIIT.

' lVitnessesz' E. HAG IiwiNn MILLER.

Se aving, trumiions.

